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- W70858996 abstract "This paper reports that downhole vertical seismic profiles (VSPs) can help improve confidence in a seismic interpretation when surface seismic data are poor and the local geology is complex. Improved siting of additional drilling locations can result. In the case study detailed, Paleozoic outcrops at a prospective Alberta Foothills location caused the surface seismic data obtained to be a very poor representation of the subsurface. To gain needed subsurface detail, the operator chose to acquire a VSP survey in an initial wellbore in the area. Briefly, steps in the survey included: building an initial geologic model from the surface seismic in hand and limited local geologic knowledge; drilling a prospect well based on the initial geologic model; acquiring one VSP pass prior to reaching TD to locate a major fault and optimize the second VSP pass; process the first VSP pass and reinterpret the surface seismic based on the direct arrivals obtained from the VSP; modify the geologic model; acquire a second VSP pass optimized over the zones of interest; process the second VSP pass and overlay it on the reinterpreted surface seismic for further refinement and agreement; modify the geologic model and pick further drilling sites." @default.
- W70858996 created "2016-06-24" @default.
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- W70858996 date "1992-07-01" @default.
- W70858996 modified "2023-09-26" @default.
- W70858996 title "Canadian foothills geology unraveled by VSPs" @default.
- W70858996 hasPublicationYear "1992" @default.
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